%0 Journal Article %A G. I. Shishkin %T Grid approximation of singularly perturbed equations, degenerated on the boundary. The case of sharply changing coefficients in the neighbourhood of the boundary layer %J Matematičeskoe modelirovanie %D 1994 %P 105-121 %V 6 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM_1994_6_5_a8/ %G ru %F MM_1994_6_5_a8